Handle CALLBACKS transitions in NormalizeProperties, CopyInsert and RemoveTransitions.

src/property.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 84 matching lines @@
   Descriptor(String* key,
              Object* value,
              PropertyAttributes attributes,
              PropertyType type,
              int index = 0)
       : key_(key),
         value_(value),
         details_(attributes, type, index) { }
 
   friend class DescriptorArray;
+  friend class JSObject;
 };
 
 // A pointer from a map to the new map that is created by adding
 // a named property.  These are key to the speed and functioning of V8.
 // The two maps should always have the same prototype, since
 // MapSpace::CreateBackPointers depends on this.
 class MapTransitionDescriptor: public Descriptor {
  public:
   MapTransitionDescriptor(String* key, Map* map, PropertyAttributes attributes)
       : Descriptor(key, map, attributes, MAP_TRANSITION) { }
@@ skipping 260 matching lines @@
   JSReceiver* holder_;
   int number_;
   bool cacheable_;
   PropertyDetails details_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_PROPERTY_H_